Exchanges and other trading platforms are often vertically integrated to carry out trading, clearing and settlement as one operation. We show that such vertical silos can prevent efficiency gains from horizontal consolidation of trading and settlement platforms to be realized. Independent of the gains from such consolidation, when costs of settlement are private information, there is no mechani...

PURPOSE To determine whether patients can guess their intraocular pressure (IOP). DESIGN Patient survey. METHODS We asked consecutive patients to guess their IOP and then indicate the IOP and the symptoms that allowed them to guess. RESULTS Of 132 patients, 22 (17%) believed they could guess their IOP, usually based on a periocular symptom (n = 20, 91%). Nine of these patients (45%) corre...

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We present in this work a technique for designing approximation schemes and its application to the discrete resource sharing problem (dRSSP ). We use the (classical) oracle formalism, in which a reliable oracle provides some information (usually called “a guess”) that helps to construct a good approximated solution. This oracle technique is sometimes called “partial enumeration” [ST07] or “outp...